The phrase "a faint feeling" is correct and usable in written English.
It can be used to describe a subtle or weak sensation or emotion that someone is experiencing.
Example: "As she walked through the old house, she had a faint feeling of nostalgia wash over her."
Alternatives: "a slight sense" or "a vague impression".
One Friday last August, he felt exhausted and down, with a faint feeling of indigestion.
But he has gone so long and so often without food that hunger is now a faint feeling, he said, though he knows he needs to eat.
Viktor Horsting and Rolf Snoeren always have put the emphasis on the gentleman, and these clothes had a faint feeling of brash and trash in Eastern Europe.
And is there a faint feeling that the more extreme, gushing cards might be chosen by those whose relationships with their mothers are not, in fact, perfect?
There was a lull, and I had a faint feeling of "Huh, is that all it is?" Later that week the story went viral, and it had a life of its own.
In later life the only impact has been a faint feeling of shiftiness when I'm invited to become a visiting professor, but sooner or later I'll probably say yes to somewhere that asks, if only to see what it's like.
If you're panting or gasping for air, fatigued or faint, feeling hot, have headaches or nausea, feel confused or feel unwell in any other way, these are signs that the heat is getting to you.
"Full-on opulence and full-on techniques — it's a gift wrap moment," said Christopher Kane, referring to the crystals dangling from slim, super-light dresses and a faint fetish feeling emanating from elegant shifts fashioned out of plastic materials.
Trying to make it through the vast buffet of scripted television rolling out weekly can sometimes produce an uncomfortably overstuffed feeling; I can't always tell whether what I'm watching is any good through the faint feeling of post-binge nausea.
In more recent Playfair competitions I've given hints of some kind to identifying the code word to help you a bit, and though many of you expressed gratitude for the 'double-p' hint, I got the faint feeling that some thought it somewhat over-generous.
A lightheaded feeling may vary from a vague sense that your brain is "not clear" to the dramatic symptom of feeling like you will faint when you stand up.
